问题
解答题
计算: (1)(-25)+30+156+(-75); (2)-3
|
答案
(1)原式=[(-25)+(-75)]+(30+156)
=-100+186
=86;
(2)原式=(-3+2-5)+(-
+1 2
-1 2
)1 6
=-6
.1 6
计算: (1)(-25)+30+156+(-75); (2)-3
|
(1)原式=[(-25)+(-75)]+(30+156)
=-100+186
=86;
(2)原式=(-3+2-5)+(-
+1 2
-1 2
)1 6
=-6
.1 6